From 902cc64d32a32c4d3ffe4199f0025e2e8b3fda84 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=89milie=20Feral?= <emilie.feral@numworks.com>
Date: Thu, 19 Dec 2019 15:18:03 +0100
Subject: [PATCH] [apps] GlobalPreferences: add an assertion to ensure the the
 fetched exam mode can be casted in GlobalPreferences::ExamMode

---
 apps/global_preferences.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/apps/global_preferences.cpp b/apps/global_preferences.cpp
index e47965cc6..c6644f5fd 100644
--- a/apps/global_preferences.cpp
+++ b/apps/global_preferences.cpp
@@ -7,7 +7,9 @@ GlobalPreferences * GlobalPreferences::sharedGlobalPreferences() {
 
 GlobalPreferences::ExamMode GlobalPreferences::examMode() const {
   if (m_examMode == ExamMode::Unknown) {
-    m_examMode = (ExamMode)Ion::ExamMode::FetchExamMode();
+    uint8_t mode = Ion::ExamMode::FetchExamMode();
+    assert(mode >= 0 && mode < 3); // mode can be cast in ExamMode (Off, Standard or Dutch)
+    m_examMode = (ExamMode)mode;
   }
   return m_examMode;
 }